Royal Society of Chemistry, Chemical Communications, 21(47), p. 6042
DOI: 10.1039/c1cc11167a
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A large 4,4'-biphenylene-spaced bis-β-diketone ligand is demonstrated to form a neutral tetrahedral M(4)L(6) metal-organic cage that encloses a volume of 844 Å(3) and encapsulates four tetrahydrofuran guest molecules.